Uí Maine, or Hy Many, was centered in eastern Co. Galway and southern Roscommon. John O'Donovan in his work the Tribes and Customs of Hy Maine states the ancient territory of Úi Maini comprised; in county Roscommon the baronies of Ballymoe, Ballintober South, Athlone and Moycarn; and in county Galway the baronies of Ballymoe, Tiaquin, Killian, Kilconnell, Clonmacnowen, Longford, Leitrim, Loughrea, and parts of Dunkellin and Athenry; and in county Clare, part of Tulla Upper.; and in King's Co. (co. Offaly) the parish of Lusmagh.
The Annals of Ireland describes Ath na ríogh, Athenry in co. Galway, as the ford where the territories of Aidne, Ui Maine, and Ui Briúin Seola meet.

About the 5th century, a northern tribe moved into East Galway; they were said to be descended from Colla dá Críoch (one of the
Three Collas). They occupied an area around Ballinasloe, and Creagh supposedly takes its name from them. One of their chieftains was called Máine Mór, from whom are the descended tribes of Uí Máine, aka Hy Many. Among the Úi Maine dwelt the Sogain, a Cruthin tribe, the Delbna, the Dal naDruithne who are believed to be of the mythic Tuatha Dé Danann Celts, as well as other tribal groupings who came under tribute of the Uí Maine dynasts. Like many areas of medieval Ireland the territory of Ui Maine contained a variety of septs and tribal groups who are often inter-connected by actual or synthethic genealogies.

According to the historian O'Rahilly, the Uí Maine were pre-Milesian Celts who were later given a fictitious Milesian pedigree showing them descended from Maine Mor, son of Eochu, in descent from Conn Cétchathach (Conn of the Hundred Battles). Among the variant genealogies is also cited Maine, son of Niall [of the Nine Hostages], a quo Úi Maine & Fir Thethba & Breacraighe. It is interesting to note that the Úi Maine of Teathbha were early neighbors of the Úi Maine of Connacht, separated by the river Shannon. Francis Byrne in his Irish Kings and High-Kings cites the Úi Maine of Connacht held territory further north in co. Roscommon in the early years of their settlement. The Ui Maine of Connacht were also neighbors across the river from the Breacraighe. Were the two Úi Maine possibly a connected tribal group, separated by later genealogies?

Other genealogies exist for different septs with the same name. These include Uí Maine genealogy who are descended from Óengus Dub, grandson of Cathaír Mór, of the Ua Failge sept of Leinster.

The O'Kellys, O'Donnellans and O'Maddens were prominent among the septs of the Uí Máine of southeast Connacht. The O'Kellys (Ó Ceallaigh) were over-lords in the territory of Hy Many, their eponymous ancestor cited as Ceallach, son of Finnachta, a chief of the Hy Many people about 874 A.D. The O'Donnellans claim descent from Domhállan, lord of Clan Breasail. The O'Maddens (Ó Madadháin) held territory in Co. Galway next to the Shannon and extending over the river in Offaly, their surname derived from an ancestor given as Madúdhan, a chieftain of Síl n-Anmcadha who was slain in 1008.

Other septs within the traditional region of Uí Máine included Ó Concheanainn (O'Concannon), lords of Uí Diarmada near Kilkerrin, Co. Galway; Ó Cobhthaigh (O'Coffey), a branch of the O'Maddens; Ó Neachtain (O'Naghten), chiefs near Loughrea and later of the Fews (Athlone); Ó Maolalaidh (O'Mulally or Lally), of the same stock as the O'Naghtens; Mac Eochaidh (MacKeogh), lords of Magh Finn (Moyfinn, Athlone); Ó Roduibh (Mac Geraghty), one of the four royal chiefs under O'Conor; Ó Fathaigh (O'Fahy), whose territory came to be known Pobal Mhuintir ui Fhathaigh; Ó Dúnadhaigh (O'Downey), chiefs of Sil Anmchada prior to the O'Maddens; Ó Dubhagain (O'Dugan), though not of the same stock as the O'Kellys; Ó Cionnaoith (O'Kenny), of the same stock as O'Madden; Ó Muireadhaigh (O'Murry) of the barony of Athlone; Ó Treasaigh (O'Tracy), akin to the O'Maddens; Ua Braonain of Sil Anmchadha, closely related to the O'Maddens were located in the barony of Longford in County Galway; Ó Conghalaigh (O'Connolly), of the same stock as O'Madden; Ó Conraoi (O'Conry) of Hy Many; Mic Uallacháin (Mac Cuolahan) of Garrycastle, Co. Offaly, noted as chiefs of Muintir Cionaetha; O'Draighneain (O'Drennan) of the Sil Anmchadha group in the barony of Longford; O Dobhailen (Dolan) of Clommacowen, Co. Galway and Athlone, Co. Roscommon; Ó Fallamhain (O'Fallon), chiefs of Clan Uadach; Ui Longargáin of Ballynabanaby (parish of Kilgerril, barony of Kilconnel), described as Harpers of the Hi Maine; ...

Following the coming of the Normans beginning in the 13th century, a portion of ancient Ui Maine later became known as the district of Clanricarde, named for a branch of the Burke family. This included much of the baronies of Loughrea, Kiltartan, Clare, Dunkellin, Athenry and Leitrim, in co. Galway, according to O'Donovan.
Uí Máine - in the Annals and Genealogies

For 531/38, The battle of Claenloch, in Cinel Aedh, by Goibhneann, chief of Ui
Fiachrach Aidhne, where Maine, son of Cearbhall, was killed, in defending the
hostages of Ui Maine of Connaught.

For 600, Conall Guithbhinn, son of Suibhne, son of Colman Mor, slew Aedh
Buidhe, chief of Ui Máine

For 597/601, Brenainn, son of Cairbre, son of Fechine, Lord of Ui Maine, died.

For 622, The battle of Carn Fearadhaigh was gained by Failbhe Flann over the
Connaughtmen, wherein were slain Conall, chief of Ui Maine, among others.

For 649, The battle of Airther Seola, in Connaught, by Ceannfaeladh, son of
Colgan and Maenach, son of Baeithin, chief of Ui Briuin [Breifne], in which was
slain Marcan, son of Toimen, chief of Ui Maine.

For 688, Fidhgellach, mac Flainn, toisech Ua Máine.

For 691, Fithceallach mac Flainn, lord of Ua Máine, died.

For 691, Fidchellach mac Flaind, ri h-Ua Maíne mortuus est.

Fro 711, Seachnasach, chief of Ui Maine, died.

For 738, Dluthach, son of Fithcheallach, Lord of Ui Maine, died.

For 745/50, Cathal Maenmaighe, Lord of Ui Maine, died.

For 749, Ailello h-ui Daimine, ríg h-Úa Maine.

For 750, Inreachtach, son of Dluthach, lord of Ui Maine, died.

For 751, The battle of Bealach Cro was gained by Crimhthann over the Dealbhna
of Ui Maine, in which was slain Finn, son of Arbh, Lord of Dealbhna [Nuadhat],
at Tibra Finn, and the Dealbhna were slaughtered about him. The Ui Maine were
contending with them for the cantred between the Suca (the River Suck) and the
Sinainn (the River Shannon), for this was called the cantred of Dealbhna.

For 767, Aedh Ailghin, lord of Ui Maine, was slain.

For 770, The battle of Achadh Liag was fought between the Ui Briuin and Ui
Máine, wherein the Ui Máine were defeated.

For 780, Dunchadh Ua Daimhine, lord of Ui Maine, died.

For 782, Conall, son of Fidhghal, lord of Ui Maine, died.

For 784, Duncadho mac Duib Da Tuadh regis Nepotum Máine.

For 786, Amhalgaidh, lord of Ui Maine, died.

For 794/99, Ailell, son of Innreachtach, lord of Ui Máine Connacht, died.

For 816, The battle of Rath Fhearadh by the chieftains of Ui Briuin, Diarmaid,
son of Tomaltach, and Maelcothaigh, son of Fogartach, against the lord of Ui
Maine, Cathal, son of Murchadh, in Dealbhna Nuadhat, between the Suca and the
Sinnainn, where Cathal and many other nobles along with him were slain.

For 834, Cluain Mic Nois (Clonmacnoise) was profaned by Cathal, son of Ailell,
lord of Ui Maine, against the prior, Flann, son of Flaithbheartach, one of the
Ui Forga of Munster, whom he cast into the Sinainn, and killed. A defeat was
given by Cathal, son of Ailill, to Feidhlimidh, son of Crimhthann, King of
Caiseal.

For 844/46, Cathal, son of Ailell, king of Ui Máine, died.

For 883, Maelpadraig, Abbot of Cluain Mic Nois, of the race of the Ui Maine,
died.

For 1030, Concobar mac Taidg h-Ui Cellaig, ri h-Ua Maíne, was slain by the men
of Tethba.

For 1065, M. Taidhg H. Ceallaigh ri H. Máine.

For 1074, Dunchadh h-Úa Cellaig, aird-ri h-Úa Maine.

For 1134, Aed mac maic Taidhg h-Úi Cellaig, rí h-Úa Maine, died.

For 1135, Hua Madadhan, rí Sil n-Anmchadha & h-Úa Maine, was slain.

For 1159, Concobar O Cellaig rí ó Maine.

For 1318, Conchobar h. Cellaig ri h. Máine.

For 1322, Gilliberd h. Cellaig ri h. Máine.

For 1339, Ruaidri Ua Cellaig ri h. Máine, was slain by O'Conor.

For 1372, Uilliam Oc Ua Cellaig adbar rig h. Máine.

For 1424, Aed mac Briain h. Cellaig ri h. Máine.

For 1469, Aed mac Uilliam h. Chellaig ri h. Máine.

Síl n-Anmcadha

Ó Dúnadhaigh (O'Downey) were chiefs of Sil Anmchada up to the 11th/12th? century, prior to the rise of the Ó Madudháin (O'Madden) sept. The Ua Braonain of Siol Anmchadha, closely related to the O'Maddens were located in the barony of Longford, county Galway. As such they were a branch of the Uí Maine. The eponymous ancestor of the O'Maddens is given as Madúdhan, a chieftain of Síl n-Anmcadha who was slain in 1008.

For 1201, Murrough O'Madden, Chief of half Sil-Anmchadh, was wounded in the head by an arrow, and died of the wound.

For 1207, Dermot O'Madden, Lord of Sil-Anmchadha, died.

For 1235, Madden O'Madden, Lord of Sil-Anmchadha, died.

Ui Diarmada

Ó Concheannainn (O'Concannon), said to be a sept of the Ui Maine? (by McLysaght), were lords of Ui Diarmada in the parish of Kilkerrin, County Galway, from the 11th to the 15th centuries. They claim descent from Cú Chenand, son of Tadhc mac Muirchertaigh, who was killed about 991.
The genealogies of the Book of Ballymote place their descent through the Sil Muiredaigh of Uí Briúin, under the heading Genelach Diarmata Find mc. Tomaltaig. A lineage there is cited as Murgius (of 1037), son of Uatu, son of Cú Cenand, son of Tadg, son of Muircertach, son of Ailill, son of Uatu, son of Datláech, son of Diarmaid Find, son of Tomaltach, son of Murgal, son of Indrachtach, son of Muiredach muillethan.

Note: Not to be confused with O'Cairellain of Clann-Diarmada in northern Ireland, or with Mac Diarmada, kings of Magh-Luirg (Moylurg).

Ui Fiachrach Finn - descended from Fiachra Finn, grandson of Maine Mór (a quo Ui Maine), this tribal name was noted in Moenmoy, county Roscommon (Tribes and Customs of Hy Maine, ed. O'Donovan). O Neachtain (O'Naghten, O'Naughton) and O Maolalaidh (O'Mullally) were noted as chiefs in this region prior to the Anglo-Norman invasion.

John O'Dubhagain in his Topographical Poems cites the sept of "O hEirc, over Ui-Fiachrach Finn," a reference to the territories of Airghialla (northern Ireland). The sept of O hEirc, chiefs of Hy-Fiachra Finn, were noted by O'Hart in the barony of Massarene, modern co. Antrim. The Leabhar na gCeart cites Ui Fiachrach Finn in and around the parish of Ardstraw in county Tyrone, an area which has been equated with the Uí Fiachrach Arda Srátha (Ardstraw).
There are other references to Ui Fiachrach in the Airgialla region, for example the Síl Ciarain of Ui Fiachrach are noted of Dún Da Én in Dail Araide and Síl Ciarain Ua nEchach of Airthir in Ulster (Book of Lecan).

MCB1392, A raid by Cathal son of Ruaidhrí son of Toirdhealbhach Ó Conchobhair on the son of Eochaidh Ó Ceallaigh, and he took cattle and horses into the Feadha with him. Peace was made between the same kings, i.e. a division of territory, namely of the Feadha, was also made between the two Muinntear Neachtain.

Maenmagh - aka Maonmag or Moenmoy, a territory round Loch Reagh, co. Galway. Maonmuighe or Maenmoy is described as an extensive plain comprising a great part of the present baronies of Loughrea and Leitrim in the county Galway. O Neachtain (O'Naghten, O'Naughton) and O Maolalaidh (O'Mullally) were noted as chiefs in this region prior to the Anglo-Norman invasion (see above).

The Cenél Cormaic were also noted in Maenmaigh (descended from Cormac, son of Eoghan, son of Niall?). The genealogy of Ui Corpmaic Maenmhuighe is cited by O'Clery, in descent from corpmaic m Cremhthainn m Bresail m Maine mhoir (a quo Ui Maine). O'Hart cites O'Donchadha, or O'Donoghoe, were chiefs of Clan Cormaic, a district in Maenmoy in Galway.

The Annals cite for Maenmag:

U585/M581, Death of Aed son of Suibne, king of Maenmag.

U750, Death of Cathal of Maenmag, king of Uí Maine.

U803, A skirmish between the Sogain and the sept of Maenmag, in which many were slain.

M1067, Tadhg Ua Muireagain, lord of Teathbha, was killed by Muintir-Tlamain, in Maenmhagh.

CS1132, A raid by Conchobor ua Briain into Maenmagh and he plundered Cell Biain and brought away many cows.

C1315, The Cantred of Maenmag was plundered and burned by Tadc O Cellaig.

Clann Diarmada and Clann Aedhagáin
MacEideadhain or Mac Aodhagain (anglicised "MacEgan") were chiefs of Clan Diarmada, a district in the barony of Leitrim, county Galway; and had a castle at Dun Doighre, now "Duniry." The MacEgans were Brehons in Connaught, and also in Ormond; and many of them eminent literary men. The Mac Egans supplied hereditary Brehons to different parts of Ireland. O'Hart mentions the sept of O'Connaill or O'Connell, chiefs of the territory from the river Grian (or Graney), on the borders of Clare (barony of Upper Tulla), to the plain of Maenmoy: comprising parts of the barony of Leitrim in Galway, and of Tullagh in Clare. These O'Connells and the MacEgans were marshals of the forces to the O'Kellys, princes of Hy-Maine; and of the same descent as the O'Kellys, namely that of the Clan Colla.

U1438, Concobur Mac Aedhagain died this year: to wit, the ollam of Clann-Ricaird, namely, one eminent in jurisprudence and so on.

LC1529, The Cosnamhach, son of Ferghal, son of Donnchadh Dubh Mac Aedhagáin, the most eminent man in the lands of the Gaeidhel in fenechas, and in poetry, with lay Brehonship, died.

LC1529, Domhnall, the son of Aedh, son of Domhnall Mac Aedhagáin, i.e. the Mac Aedhagáin of Ur-Mumha, i.e. head of the learned of Leth-Modha in knowledge and piety, died. .

Clann Flaitheamhail - a district in the barony of Moycarn, county Roscommon, its chief was Mac Gilli Enáin (Book of Lecan). O'Hart states the MacGiolla Fionnagain or O'Finnegan, and the Ó Cionnaoith or O'Kenny, were chiefs of Clan Iaitheamhaim or Flaitheamhain, called also Muintir Cionaith, a district in the barony of Moycarnon, county Roscommon.

The Annals cite:

CS1101, A skirmish of two bands of soldiers in Cluain moccu Nóis, i.e. Muinter Tadgáin and Muinter Cinaeith, and Muintir Cinaeith were defeated and the Gilla Finn grandson of Uallacháin, king of Síl Anmchada, was killed there.

M1158, Sitric, son of Gilla-Enain Ua Domhnaill, chief of Clann-Flaitheamhail, was slain by Murchadh, grandson of Tadhg Ua Ceallaigh; and the two sons of Murchadh, son of Tadhg, were killed in fetters by Ruaidhri Ua Conchobhair, in revenge of him.

LC1183, Domhnall, son of Gilla-Enain, dux of Ciann-Flaithemhail, rested.

Clann Connmaigh and Clann Murchadha -
O Fínnachta (O'Finaghty) were chiefs of Clan Connmaigh and of Clan Murchada, districts in the two half baronies of Ballymoe in the counties of Galway and Roscommon. Clanconow, alias Clanconway, is described by O'Donovan as west of the river, a branch of the O Finaghtys. Hennessy gives Clann Murchadha on the east of the river Suck. O'Finaghty of Clan Conway, had their castle at Dunamon (Caislén Dúin Imgáin), near the river Suck, in the county Roscommon. O'Dugan makes note of their two chiefs in the Poems, and cites Finaghty of "Clan Murrogh of the Champions;" and Finaghty of the "Clan Conway."

The O'Finaghtys were noted by O'Hart as a branch of Clan Colla, as were the Ui Maine. The historian O'Dononvan notes the Ó Fionachta (O'Finaghty) were of the same stock as the O'Connors of Sil Murray, who at one time were senior to them. Dr. A. Moore states that there was also an Ui Maine sept of O'Finaghty. The Annals of Tigernach give Clann Conmaig as a sub-division of Síl Muiredaig, the territory giving tribute to the kings of Connacht. The Mac Davey Burkes were later lords of Clanconway.

M1189, Conor Moinmoy (the son of Roderic), king of all Connaught, both English and Irish, was killed by a party of his own people and tribes; i.e. by Manus, the son of Flann O'Finaghty (usually called an Crossach Donn), and others.

M1225, Teige O'Finaghty, one of the officers Aes graidh of Hugh, the son of Roderic [O Conchobair], was slain by the people of Mac Egan...

C1225, Muiredach O Finnachta, chieftain of Clann Murthaile, died in a boat on Loch Corrib, though in good health when he entered it.

C1289, Simon O Finnachta, Archdeacon of Elphin, [rested].

1309, Macwilliam [Burke] crossed the Curlieus northwards and ejected the son of Cathal from his stronghold. The vanguard of Macwilliam's army killed Donnchad O Finnachta and others not enumerated here.

C1354, Seaan O Finnachta, bishop of Elphin, rested in Christ.

M1413, O Flainn, chieftain of Tellach Curnan, was killed by the son of Muirchertach O Flainn and some of the Clanconway this year.

M1424, Richard Mac David Burke, lord of Clanconway, died and was buried at Roscommon.

M1475, Eogan Caech O Conchobair utterly defeated the Clanconway in a night-engagement, wherein more than two score were killed, including two sons of Hubert son of William Mac Davy [Burke] and two sons of Tadc O Cellaig.

Clan Breasail -
Chiefs of Clan Breasail, a district in the barony of Leitrim, county Galway, are identified by O'Hart as O'Domhnallain or O'Donnelan. McLysaght places them with Ballydonnellan, a district between Ballinasloe and Loughrea. They claim descent from Domhnallán, a lord of Clan Breasail, and were chiefly known as ollavs or poets. The Book of Lecan cites Muinter Domnalláin, in Húib Maine, as an alias for Clan Breasil.
Note: Clan Breasail is not to be confused with the Uí Bresail of Armagh.

The Annals cite:

M1342, Flann Oge O'Donnellan, Ollav of Connaught in poetry, died.

M1375, Melaghlin O'Donnellan, Ollav of Sil-Murray in particular in poetry, and the most learned man in all Ireland in the same art, died of Fiolun.

M1407, Tuathal, the son of Melaghlin O'Donnellan, intended ollav of Sil-Murray in poetry, died.

M1435, O'Donnellan, Cormac, son of Melaghlin, died.

M1454, O'Donnellan, Flann, the son of Cormac, died.

M1461, Melaghlin, son of Flann O'Donnellan, died.

M1486, Flann, the son of Flann O'Donnellan, died.

M1531, Tuathal, the son of O'Donnellan of Machaire-Maenmaighe, died.

LC1561, Maelsechlainn, son of Tuathal O'Domhnallain, died: i.e. the ollamh of the greater part of Connacht in poetry, and a man who always kept a guest-house.

Clann Uadach (or Uatach)
- The O'Fallons (Ó Fallamhain) were noted as chiefs of Clan Uadach, aka Clann Fhuadach, a territory comprising much of the present parishes of Cam and Dysart in the barony of Athlone, Co. Roscommon.
Note: There was also an apparently unrelated sept of Ua Fallamhain (O'Fallon of Crich na Cetach) centered near the barony of Warrenstown, county Offaly. Perhaps related to these were the people of Caille Fallamhain, a territory noted near the barony of Moygoish, in the north of county Westmeath, with Ua Lorcáin and Ua Clérchéin cited as chiefs in the 11th century.

For 882, Maelduin, son of Aenghus, lord of Caille Fallamhain, died. [Mide]

For 890, Ruadhachan, son of Cathan, lord of Feara Cul, and Innreachtach, son of Maelduin, lord of Caille Follamhain, were slain in Ossory, in the army of Maelruanaidh, son of Flann, and of the son of Imhar. [Mide]

C1424, Tadc O Fallamain, chieftain of the Clann Uatach, was treacherously killed by Domnall Glas O Fallamain in his own castle. [Connacht]

Corco Moga -
Identified by O'Donovan in Topographical Poems of O'Dugan and O'Heerin as Corcamoe (Corco Mogho), comprising the parish of Kilkerrin, in the barony of Killian, co. Galway. O'Hart mentions the O'Sgaithgil or Scahil, as chiefs of Corca Mogha, as well as O'Broin, anglicized "Burns," who was chief of Lough Gealgosa, a district adjoining Corca Mogha.

The Annals cite:

T614, To Lua abb Cluana Maic Noís, .i. do Corco Mogha, pausat.

T665, Colmán cas, abbot of Cluain moccu Nóis, the son of Fualascach—his kin was of the Corco Moga; he held the abbacy for only one year and three days.

M950, Feardomhnach Ua Maenaigh, Abbot of Cluain-mic-Nois and Gleann-da-locha, of the tribe of Corca-Mogha, died.

M1002, Flannchadh Ua Ruaidhine, successor of Ciaran, son of the artificer, of the tribe of Corca-Mogha, died.

Síl Máilruain -
From O'Hart comes the following citation. "O'Floinn or O'Flynn, chiefs of Siol Maolruain, a large district in the barony of Ballintubber, county Roscommon; in which lay Slieve Ui Fhloinn or O'Flynn's Mountain, which comprised the parishes of Kilkeeran [i.e. Kilkeevin] and Kiltullagh, and part of the parish of Ballynakill, in the barony of Ballymoe, county Galway. O'Maolmuaidh or O'Mulmay, was a subordinate chief over Clan Taidhg or Clan Teige
in the same district."
The Kilkenny Journal of Archaeology places O Flinne's seat was at Ballinlough. The Síl Mailruanaidh, alias Ui Floinn.

The Annals cite for the term Floinn (Connacht):

M1104, Fiachra Ua Floinn, chief of Sil-Maelruain, was killed by the Conmhaicni.

MCB1134, A troop [was brought] by Cormac son of Muireadhach Mac Carthaigh and Toirdhealbhach, Tadhg, and Conchobhar, three sons of Toirdhealbhach son of Tadhg son of Brian Bóramha, into Connacht. A great part of an Ruadhbheitheach was cut and burned, and they killed Cathal Ó Conchobhair and Giolla na Naomh Ó Floinn, and burned Dún Modhairn, Dún Mór, and the greater part of Connacht.

LC1192, Aedh O'Floinn, dux of Síl-Maelruain, died.

MCB1240, Aodh son of Giolla na Naomh Crom Ó Seachnasaigh was killed by Conchobhar son of Aodh son of Cathal Croibhdhearg [Ó Conchobhair] and by Fiachra Ó Floinn.

MCB1306, Donnchadh son of Conchobhar an Chopáin [Mac Diarmada] and Flann Ó Floinn were killed by Aodh son of Eoghan Ó Conchobhair.

Flann son of Fiachra Ó Floinn, who was eligible for the chieftainship of Síol Maoil Ruanaidh, was killed.

MCB1307, Conchobhar son of Fiachra Ó Floinn died.

MCB1309, Ruaidhrí son of Cathal [Ó Conchobhair] and Ó Floinn went into An Machaire with a troop of horse and killed Bermingham's son.

Delbna
- (or Delvin) Co. Roscommon and Co. Galway. Dealbhna Nuadhat was a territory between the rivers Suck and Shannon. They are sometimes referred to as the Dealbhna of Ui Máine. O'Flanagan was seated between Mantua and Elphin in Co. Roscommon.
MacConry (King) of Moycullen are cited as chiefs of Dealbhna Thire Dá Locha (of the Two Lakes), though not located in Ui Maine.
There were also Delbna territories in Westmeath and Meath, i.e. Delbna Mor, Delbna Bec and Delbna bEthra. For reference on these, see
Mide and Brega.

The Annals cite for Delbna (in Connacht):

For 751, The battle of Bealach Cro was gained by Crimhthann over the Dealbhna of Ui Máine, in which was slain Finn, son of Arbh, Lord of Dealbhna, at Tibra Finn, and the Dealbhna were slaughtered about him. From this are named Lochan Bealaigh Cro, and Tibra Finn. The Ui Máine were contending with them for the cantred between the Suca the River Suck and the Sinainn the River Shannon, for this was called the cantred of Dealbhna.

For 751/759, The shipwreck of the Dealbhna Nuadhat on Loch Ribh, with their lord, Diumasach. Thrice nine vessels and three, of the Gamhanraighe of Loch Ribh.

For 816, The battle of Rath Fhearadh by the chieftains of Ui Briuin, Diarmaid, son of Tomaltach, and Maelcothaigh, son of Fogartach, against the lord of Ui Máine, Cathal, son of Murchadh, in Dealbhna Nuadhat, between the Suca and the Sinnainn, where Cathal and many other nobles along with him were slain.

M1048, A predatory excursion was made by the royal heirs or chieftains of Ui-Maine into Dealbhna, where the royal chieftains were all slain, namely, Ua Maelruanaidh, Ua Flannagain, the Cleireach Ua Taidhg, and Mac Buadhachain, royal heir of Dealbhna Nuadhat.

Sogaine
- of modern counties Galway and Mayo, centered about the barony of Tiaquin. O'Mainnin, O'Mannin, O'Mannion, or O'Manning, were cited as chiefs of Sodhan (Sogain). The other chiefs given by O'Dugan on the "Six Sodhans" were Mac-an-Bhaird (MacWard or Ward); O'Sgurra (Scurry); O'Lennain (Lennon); O'Casain (Cashin); O'Gialla or O'Giallain (rendered Gilly, and Geallan); and O'Maigin or Magin (MacGing or Ging).

According to the "Book of Lecan" the Sogain were descended from Sodain (Soghan Sal-bhuidhe), the son of Fiachra Araidh, King of Ulster about 240 AD. It would appear that they came to Galway about the 3rd century as they were well established there by St. Patrick's time. They occupied an area which, according to the Book of Uí Máine, stretched from the river Clare in the west to the river Suck in the east and from the river Shivern in the north to the Raford river in the south. This area was known as Mag Sencheineoil, or the plain of the old inhabitants.
Onomasticon Goedelicum cites that the Ui Echach Coba, Ui Meith Macha and Conaille Murthemne are of the same stock as Sogain. They were members of Clann Conaill Cernaich, i.e. Dál n-Araide & Úi Echach Ulad & Conaille Murthemni & Laígsi Laigen & na secht Sogain.

Among the Ui Máine dwelt the Sogain, a Cruithin (Pict) tribe, and the Dal naDruithne believed to be Tuatha De Danann Celts. According to Tribes and Customs of Hy Maine (ed. O'Donovan), Ó Mannáin, chief of the 6 Sogain, had his chief seat at Menlach O Mainnin near Castle Blakeney, the six Sogain noted as Cenél Fergna, Cenél nDomangein, Cenél Luchta, Cenél Rechta, Cenél Tréna, and Cenél Deigeille. Ballydugan and Muine Casáin (the seat of Mac Ward) are included within the territory of the Sogain.
The Book of Uí Máine also states that the Sogain comprised six kindred branches: Cineál Reachta, Tréana, Cineál Luchta, Cineál Fergna, Cineál Domangéin and Cineál Deigeille.

The Annals cite:

U803, A skirmish between the Sogain and the sept of Maenmag, in which many were slain.

For 811/16, Irgalach, son of Maele h-Umhai, king of Corco Sogain, died.

CS1052, Echtigern ua Egráin of the Sogain of Uí Maine, successor of Ciarán of Cluain moccu Nóis and of Comán, died on pilgrimage in Cluain Iraird.

C1224, A heavy and terrible shower fell in part of Connacht this year, that is, in Tir Maine and in Sodain and in Ui Diarmata and in Clann Taidc, which brought about disease and very great sickness among the cows and beasts of those regions after they had eaten grass and leaves; and when men drank of the milk of these cattle and ate of their flesh, they suffered internal pains and various diseases.

For 1352, the O'Kellys of Ui Máine hanged the Sogain chieftain, known as Ó Mannáin (O'Mannion) and occupied his castle at Clogher (Killaclogher in the parish of Killascobe).

For 1377, Rory O'Conor defeated Mac William Burke, and Melaghlin O'Kelly, Lord of Hy-Many, at Roscommon, where O'Mainnin, Chief of Sodan, among others, were slain.

Dál nDruithne
The Dál nDruithne are described in the Book of Ui Maine as a branch of the Catraighe (an ancient tribal group) who were centered by the river Suca (Suck) in Hy Maine. It is also referred to as Druithnia, a quo Dál nDruithni in Connacht. The Book of Lecan describes Dál nDruithne as a sub-division of Ui Maine; in Maenmagh in Connacht, and that they are descended from Duach, son of Daimin (in the line of the three Collas).

The Book of Ui Maine describes some of the early tribes of the Catraige Suca (on both sides of the river Suck) as the Corcho Moncho, Dál nDruithne, Fir Muighe Seincineoil, and Muinnter Tuaighe Milchon.

O'Hart cites O'Docomlain, chiefs of Eidhnigh; and O'Gabhrain or O'Gauran, chiefs of Dal Druithne, districts about Loughrea.
Cremthann (Crumthann, Cruffon, Criffon)
Cruffon, a district containing the barony of Killian and large part of the barony of Ballymoe in co. Galway. O'Hart describes the three chiefs of Crumthan or Cruffan, as O'Cathail (Cahill), O'Mughroin (Moran), and O'Maolruanaidh (Mulrooney or Rooney). Tribes and Customs of Hy Maine cites the Ui Chrumthainn were of Crumthann, aka Cruffon, in Ui Maine. Clann Cremthaind, a sept of Ui Maine, descended from Crimthann Cael, 4th from Maine mór.

Note: An O'Mughroin sept is cited as a chief of Clann Cathail in Connacht. A sept of Ua Cathail were lords of Eóganacht Locha Léin in Munster. A sept of O'Maelruanaidh were kings of Moylurg in Connacht. There was also a tribal group of the Clann Colla, in northern Ireland, referred to as Uí Cremthainn.

The Annals cite:

M867, Cian, son of Eochaidh, lord of Creamthainn, died.

M998, Maelseachlainn Ua Maelruanaidh, lord of Creamhthainn, was slain by the Ui-Ceallaigh.

CS1029, Tadc son of Cathal son of Conchobor, king of Connacht, was killed by Mael Sechnaill ua Maílruanaidh, king of Crimthann, and by Clann Coscraidh with Escaidi ua Catluain.

M1029, Brian Ua Conchobhair, royal heir of Connaught, was slain by Maelseachlainn, son of Maelruanaidh, lord of Crumhthann.

CS1036, Mael Sechnaill ua Maelruanaidh king of Cremthann was killed by Aed ua Conchobuir in revenge for Tadc and Brian.

M1048, A predatory excursion was made by the royal heirs or chieftains of Ui-Maine into Dealbhna, where the royal chieftains were all slain, namely, Ua Maelruanaidh, Ua Flannagain, the Cleireach Ua Taidhg, and Mac Buadhachain, royal heir of Dealbhna Nuadhat.

1260, Macwilliam Burke made an expedition against Fedlimid [O Conchobair]. He came to Roscommon, from where he sent a raid into Cruffon, plundering the Clann Aedacain.

Magh FinnO'Hart notes that Mac Eochaidh (MacKeogh or Keogh) was a branch of the O'Kelly princes of Hy-Maine, and were cited as chiefs of Omhanach, now "Onagh," in the parish of Taghmaconnell, barony of Athlone, county Roscommon. Other sources note they were lords of Magh Finn and their territory of Moyfinn in the barony of Athlone, Co. Roscommon, was long known as Keogh's Country.
In Tribes and Customs of Hy Maine, it notes O'Mailbrigdi was chief of Bredach (Brétach, mBretaigh), alias Mag Finn (Findmag), alias Keogh's country; in the barony of Athlone, co. Roscommon. The same source cites the Clann Eochada of Maige Finn, Keogh's country. O'Donovans Tribes of Ui Fiachrach notes that Mac Eochadha or Mac Keogh were inaugurated at Dún Caillighe Béirre.

M1155, Magh-Finn was preyed by the men of Teathbha, who plundered some of the Ui-Maine.

MCB1392, Niocól son of Eochaidh Ó Ceallaigh, great dean of Clonfert and head of his own people, i.e. lord of Magh Finn, renowned for hospitality and clerkship, died of the same epidemic.

LC1562, Mac Eochaidh and O'Fallamhain were plundered by Tomaltach, son of Tadhg Mac Diarmada, and by Brian Mac Diarmada.

Caladh
Caladh, remembered in the name Callow, was a district in the barony of Kilconnell, county Galway. In the Book of Ui Maine it mentions the King of Caladh "owned from Móinín Raideach [Móin Inraidech] to Cluain Tuaisceart na Sinda." O'Hart cites that O'Laodog or O'Laodhaigh, anglicised "O'Leahy," were chiefs of Caladh in this barony. McLysaght makes note of the sept of Lahiff (sometimes O'Lahy) in this general and gives their Gaelic name as O Laithimh.
Note: Caladh, i.e. Caladh na hAnghaile, was also a name given to a region in Annaly in modern co. Longford.

The Annals cite:

M1475, The castle of Caladh was taken by Mac William of Clanrickard, and delivered up to the son of Melaghlin O'Kelly, who was the son of his Mac William's own daughter.

C1475, Callow Castle was taken by Macwilliam of Clanrickard and given to the son of Maelsechlainn O Cellaig and his [Macwilliam's] daughter.

M1519, Teige Roe, son of Melaghlin O'Kelly, Lord of Caladh, died.

C1519, Tadc Ruad son of Maelsechlainn O Cellaig, who was called ‘Tadc of Callow,’ died.

M1548, Magh-Slaine was plundered by O'Melaghlin (Teige Roe), by the English of Athlone, and by the fleet of Caladh.

M1562, O'Rourke (Brian Ballagh, son of Owen), the senior of Sil-Feargna, and of the race of Aedh Finn, a man whose supporters, fosterers, adherents, and tributaries, extended from Caladh, in the territory of Hy-Many, to the fertile, salmon-full Drowes, the boundary of the far-famed province of Ulster; ...

M1593, Teige, the son of William, son of Teige Duv O'Kelly of Caladh, in Hy-Many, died; and his death was among the mournful news of Hy-Many.